Inhaler comparison

The information here containts estimates, but is accurate to the best of my knowledge. For simplicity, I’ve only included commonly used inhalers.

Commonly used inhalers contain either steroids to dampen down inflammation (known as inhaled corticosteroid or ICS), or airway openers (known as bronchodilators) which can be short-acting (relievers) or long-acting which work for 12-24 hours. Some inhalers combine different sorts of medications, such as a steroid and long-acting bronchodilator.

Most inhalers are either Metered Dose Inhalers (MDI) which contain HFA propellant, or Dry Powder Inhalers (DPI) which don’t and therefore have far smaller carbon footprints.

Click here to jump to different classes of inhalers or perform a search on this page.


Blue reliever inhaler (short acting) – Salbutamol

Very high CO2e MDI – 28kgCO2e per inhaler

  • Ventolin Evohaler

High CO2e MDI – approx 10kgCO2e per inhaler

  • Salamol
  • AirSalb
  • Generic salbutamol inhalers

Low CO2e DPIs – less than 1kg per inhaler

  • Salbutamol Easyhaler
  • Ventolin Accuhaler
  • Terbutaline Turbohaler (contains terbutaline, not salbutamol, but works in a similar way)

Brown steroid inhalers

High CO2e MDI – approx 10-25kgCO2e per inhaler

  • Clenil
  • QVAR
  • Beclomethasone MDIs

Low CO2e DPIs – approx 1kg per inhaler

  • Budesonide Easyhaler
  • Beclometasone Easyhaler
  • Flixotide Evohaler
  • Pulmicort Turbohaler

Combination steroid and bronchodilators

Very high CO2e MDI – 37kgCO2e per inhaler

  • Flutiform
  • Symbicort MDI

High CO2e MDI – approx 10-25kgCO2e per inhaler

  • Seretide evohaler
  • Fostair MDI
  • Sirdupla
  • AirFluSal

Low CO2e DPIs – approx 1kg per inhaler

  • Seretide Accuhaler
  • Fostair Nexthaler
  • Symbicort Turbohaler
  • Duoresp Spiromax
  • Relvar Ellipta
  • Fusacomb Easyhaler
  • Fobumix Easyhaler

Other bronchodilators

These inhalers are mainly used in COPD. They come in 2 classes – Long acting Beta Agonists (LABA), long-acting Muscarinic Antagonists (LAMA) or a combination (LAMA+LABA)

Long-acting muscarinic antagonists – all low CO2e inhalers approx 1kg

  • Spiriva Handihaler or Respimat
  • Braltus Zonda
  • Incruse Ellipta
  • Eklira Genuair

Long-acting Beta agonists

High CO2e MDI – approx 15-25kgCO2e per inhaler

  • Serevent evohaler
  • Salmerol MDIs

Low CO2e DPIs – approx 1kg per inhaler

  • Formoterol Easyhaler

Combination LAMA+LABA – all low CO2e inhalers approx 1kg

  • Anoro Ellipta
  • Spiolto Respimat
  • Ultibro Breezhaler
  • Duaklir Genial